Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method for controlling heat dissipation of an electrical cabinet, comprising: predicting a heating capacity in the electrical cabinet; determining, according to the heating capacity predicted, a corresponding heat dissipation capacity; and controlling a rotational speed of a heat dissipation fan, so that a difference between the heating capacity and the heat dissipation capacity is within a predetermined range, wherein the difference between the heating capacity and the heat dissipation capacity refers to a value obtained by subtracting the heat dissipation capacity from the heating capacity; wherein predicting the heating capacity in the electrical cabinet comprises: acquiring current data, detected by a current sensor, of a conductor in the electrical cabinet; acquiring an equivalent resistance of the conductor; and obtaining, according to the current data and the equivalent resistance, a heat load of the electrical cabinet, wherein the heat load is the heating capacity predicted; wherein when a working temperature range of an electrical component includes the room temperature, determining, according to the heating capacity obtained by prediction, the corresponding heat dissipation capacity comprises: taking the heating capacity predicted as the heat dissipation capacity; wherein when the working temperature range of the electrical component is higher than the room temperature, determining, according to the heating capacity obtained by prediction, the corresponding heat dissipation capacity comprises: calculating a difference between the heating capacity in the electrical cabinet and a first preset threshold value to obtain a difference value; and taking the difference value as the heat dissipation capacity; wherein when the working temperature range of the electrical component is lower than the room temperature, determining, according to the heating capacity obtained by prediction, the corresponding heat dissipation capacity comprises: calculating a sum for the heating capacity in the electrical cabinet and a second preset threshold value to obtain a sum value; and taking the sum value as the heat dissipation capacity.
3. The method as claimed in claim 1 , wherein after determining the corresponding heat dissipation capacity, the method further comprising: calculating, according to the heat dissipation capacity, a rotational speed of the heat dissipation fan; and calculating, according to the heat dissipation capacity, the rotational speed of the heat dissipation fan comprises: obtaining a heat dissipation air flow according to the heat dissipation capacity; and determining the rotational speed of the heat dissipation fan according to the heat dissipation air flow.
5. A device for controlling heat dissipation of an electrical cabinet, comprising: a prediction component, configured to predict a heating capacity in the electrical cabinet; a determination component, configured to determine, according to the heating capacity predicted, a corresponding heat dissipation capacity; and a control component, configured to control a rotational speed of a heat dissipation fan, so that a difference between the heating capacity and the heat dissipation capacity is within a predetermined range, wherein the difference between the heating capacity and the heat dissipation capacity refers to a value obtained by subtracting the heat dissipation capacity from the heating capacity; wherein, the prediction component is implemented in the following steps to predict the heating capacity in the electrical cabinet: wherein predicting the heating capacity in the electrical cabinet comprises: acquiring current data, detected by a current sensor, of a conductor in the electrical cabinet; acquiring an equivalent resistance of the conductor; and obtaining, according to the current data and the equivalent resistance, a heat load of the electrical cabinet, wherein the heat load is the heating capacity predicted; wherein the determination component configured to take the heating capacity predicted as the heat dissipation capacity, when a working temperature range of an electrical component includes the room temperature; wherein the determination component configured to calculate a difference between the heating capacity in the electrical cabinet and a first preset threshold value to obtain a difference value, and take the difference value as the heat dissipation capacity, when the working temperature range of the electrical component is higher than the room temperature; wherein the determination component configured to calculate a sum for the heating capacity in the electrical cabinet and a second preset threshold value to obtain a sum value, and take the sum value as the heat dissipation capacity, when the working temperature range of the electrical component is lower than the room temperature.
6. A system for controlling heat dissipation of an electrical cabinet, comprising: a processor, configured to predict a heating capacity m the electrical cabinet, and determine, according to the heating capacity predicted, a corresponding heat dissipation capacity; and a controller, connected with the processor, and configured to control a rotational speed of a heat dissipation fan, so that a difference between the heating capacity and the heat dissipation capacity is within a predetermined range, wherein the difference between the heating capacity and the heat dissipation capacity refers to a value obtained by subtracting the heat dissipation capacity from the heating capacity; wherein the system further comprising: a current sensor, configured to detect current data of a conductor in the electrical cabinet; and the processor comprises: a first processing element, configured to acquire an equivalent resistance of the conductor; and a second processing element, respectively connected with the current sensor and the first processing element, and configured to obtain, according to the current data and the equivalent resistance, a heat load of the electrical cabinet, wherein the heat load is the heating capacity predicted; wherein the processor comprises: a third processing element, configured to take the heating capacity predicted as the heat dissipation capacity, when a working temperature range of an electrical component includes the room temperature; a fourth processing element, configured to calculate a difference between the heating capacity in the electrical cabinet and a first preset threshold value to obtain a difference value, and take the difference value as the heat dissipation capacity, when the working temperature range of the electrical component is higher than the room temperature; and a fifth processing element, configured to calculate a sum for the heating capacity in the electrical cabinet and a second preset threshold value to obtain a sum value; and take the sum value as the heat dissipation capacity, when the working temperature range of the electrical component is lower than the room temperature.
The system controls heat dissipation in an electrical cabinet by dynamically adjusting fan speed based on predicted heating and required cooling capacity. It addresses the problem of inefficient or inadequate cooling in electrical cabinets, which can lead to overheating and component failure. The system includes a processor that predicts the cabinet's heating capacity and determines the necessary heat dissipation capacity. A controller connected to the processor adjusts the rotational speed of a heat dissipation fan to ensure the difference between heating and dissipation capacities remains within a predetermined range, preventing overheating or excessive cooling. The system also includes a current sensor that detects current data from conductors in the cabinet. The processor calculates the heat load (heating capacity) using the current data and the conductor's equivalent resistance. Depending on the electrical components' working temperature range relative to room temperature, the processor adjusts the heat dissipation capacity. If the working temperature range includes room temperature, the heating capacity is directly used as the dissipation target. If the working temperature is higher than room temperature, the processor calculates the difference between the heating capacity and a first preset threshold to determine the dissipation capacity. If the working temperature is lower than room temperature, the processor sums the heating capacity and a second preset threshold to set the dissipation capacity. This ensures optimal cooling efficiency under varying thermal conditions.
7. The system as claimed in claim 6 , wherein the processor is further configured to calculate, according to the heat dissipation capacity, a rotational speed of the heat dissipation fan; and the processor further comprises: a sixth processing element, configured to obtain a heat dissipation air flow according to the heat dissipation capacity; and determine the rotational speed of the heat dissipation fan according to the heat dissipation air flow.
8. An electrical cabinet, comprising the system for controlling the heat dissipation of the electrical cabinet according to any one of claim 6 or 7 .
Unknown
March 30, 2021
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